Question 1 of 8
Basic

Identify the correct formula for calculating pump efficiency.

Question 2 of 8
Basic

Friction loss is dependent on the [xxxxxxxx] of the fluid.

Question 3 of 8
Basic

Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:

Question 4 of 8
Basic

How can friction loss in a system be minimised?

Question 5 of 8
Basic

What causes cavitation?

Question 6 of 8
Basic

What are the effects of cavitation on pumps?

Question 7 of 8
Basic

Which of the following is one correct method to avoid cavitation?

Question 8 of 8
Basic

Identify the true statement.

Question 8 of 8
Basic

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1: Identify the correct formula for calculating pump efficiency.
(P1 × Q)/(c × H)
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1: Identify the correct formula for calculating pump efficiency.
(p x H × Q)/(c × P1)
1: Identify the correct formula for calculating pump efficiency.
(H × P1)/(c × Q)
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2: Friction loss is dependent on the [xxxxxxxx] of the fluid.
Viscosity
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2: Friction loss is dependent on the [xxxxxxxx] of the fluid.
Velocity
2: Friction loss is dependent on the [xxxxxxxx] of the fluid.
Volume
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3: Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
Temperature sensors
3: Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
Signal wire
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3: Which of the following items are built-in in some motors and can stop the motor if it exceeds a preset temperature:
Insulation system
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4: How can friction loss in a system be minimised?
By increasing the pipe diameter
4: How can friction loss in a system be minimised?
By using 2 smaller pumps instead of one bigger pump
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4: How can friction loss in a system be minimised?
By adding a Tee to the piping system
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5: What causes cavitation?
Cavitation occurs when water changes its state from vapour to water at low pressure.
5: What causes cavitation?
Cavitation occurs when water boils at 100°C and changes its state from water to vapour at normal atmospheric pressure.
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5: What causes cavitation?
Cavitation occurs when water flows through a pipe and a valve is closed quickly at a low atmospheric pressure
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6: What are the effects of cavitation on pumps?
Breakage of rotor
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6: What are the effects of cavitation on pumps?
Pitting of suction pipe
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6: What are the effects of cavitation on pumps?
Pitting of impeller and pump housing
7: Which of the following is one correct method to avoid cavitation?
Reduce the friction loss in the suction pipe.
7: Which of the following is one correct method to avoid cavitation?
Increase the flow of the pump.
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7: Which of the following is one correct method to avoid cavitation?
Lower the elevation of the suction water level.
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8: Identify the true statement.
In deep-well pumps, you should check whether the pressure gauge is installed directly at the pump discharge.
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8: Identify the true statement.
Online monitoring equipment does not check if a parameter has changed or exceeded a preset limit.
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8: Identify the true statement.
If all the parameters are recorded immediately after the pump has been installed, you can use them as benchmark against future data.